LEED baseline model with proposed increased ventilation and pressurization

Moses Chong

Mechanical Engineer

WSP

LEEDuser Basic Member

2 thumbs up

September 13, 2023

Has any one worked on LEED project that includes increased ventilation credit AND the project has an pressurization-based ventilation rate? What should I do with the baseline model? should I a) model the baseline with the pressurization-based ventilation rate or b) use the 62.1 minimum?

OR, a little bit off topic of this forum, I should provide a calculation for the pressurization ventilation requirement, THEN increase 30% of it in order to archieve the increased ventilation (enhanced indoor air quality) credit? And model the baseline with the minimum requirement.

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Tyler Thumma

7Group

LEEDuser Expert

65 thumbs up

Fri, 09/29/2023 - 13:38

The Baseline may be modeled using the code requirement. If the pressuration-based ventilation rate is code-mandated and more stringent than the 62.1 minimum, then this rate may be used in the Baseline. If the 62.1 minimum is more stringent, then it may be used. Yes, your approach for the Enhanced IAQ credit is correct, and the Baseline is modeled with the minimum requirement (without the 30% increase).